org.sonar.sslr.channel

Class RegexChannel<O>

java.lang.Object

org.sonar.sslr.channel.Channel<O>

org.sonar.sslr.channel.RegexChannel<O>

public abstract class RegexChannel<O>
extends Channel<O>

The RegexChannel can be used to be called each time the next characters in the character stream match a regular expression

Constructor Summary

Constructors

Constructor and Description
RegexChannel(String regex) Create a RegexChannel object with the required regular expression

Method Summary

Modifier and Type	Method and Description
protected abstract void	consume(CharSequence token, O output) The consume method is called each time the regular expression used to create the RegexChannel object matches the next characters in the character streams.
boolean	consume(CodeReader code, O output) Tries to consume the character stream at the current reading cursor position (provided by the CodeReader).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RegexChannel

public RegexChannel(String regex)

Create a RegexChannel object with the required regular expression

Parameters:

regex - regular expression to be used to try matching the next characters in the stream

Method Detail

consume

public final boolean consume(CodeReader code,
                             O output)

Description copied from class: Channel

Tries to consume the character stream at the current reading cursor position (provided by the CodeReader). If the character stream is consumed the method must return true and the OUTPUT object can be fed.

Specified by:

consume in class Channel<O>

Parameters:

code - the handle on the input character stream

output - the OUTPUT that can be optionally fed by the Channel

Returns:

false if the Channel doesn't want to consume the character stream, true otherwise.

consume

protected abstract void consume(CharSequence token,
                                O output)

The consume method is called each time the regular expression used to create the RegexChannel object matches the next characters in the character streams.

Parameters:

token - the token consumed in the character stream and matching the regular expression

output - the OUTPUT object which can be optionally fed